This recently started happening I always have unprotected sex witthe same partner nd recently I have been bleeding during sex what does this mean?

Could be infection. There are several different things that can cause bleeding during sex. Infections like chlamydia, gonorrhea, yeast or bacterial vaginosis can cause the cervix to bleed easily. A cervical polyp, endometriosis or other cervical abnormalities could also be the cause. You should see your doctor.
Need eval. You need to check your hormone levels and a gyn exam to make sure.